1351425400 has 72 divisors (see below), whose sum is σ = 3402438480. Its totient is φ = 498975360.

The previous prime is 1351425391. The next prime is 1351425461. The reversal of 1351425400 is 45241531.

It is a happy number.

It is a super-2 number, since 2×1351425400² = 3652701223530320000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13809 + ... + 53791.

It is an arithmetic number, because the mean of its divisors is an integer number (47256090).

Almost surely, 2^1351425400 is an apocalyptic number.

1351425400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1351425400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1701219240).

1351425400 is an abundant number, since it is smaller than the sum of its proper divisors (2051013080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1351425400 is a wasteful number, since it uses less digits than its factorization.

1351425400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40025 (or 40003 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1351425400 is about 36761.7382614043. The cubic root of 1351425400 is about 1105.5982919189.

Adding to 1351425400 its reverse (45241531), we get a palindrome (1396666931).

The spelling of 1351425400 in words is "one billion, three hundred fifty-one million, four hundred twenty-five thousand, four hundred".