1211362425 has 288 divisors, whose sum is σ = 2897314560. Its totient is φ = 485222400.

The previous prime is 1211362409. The next prime is 1211362429. The reversal of 1211362425 is 5242631121.

1211362425 is a `hidden beast` number, since 1 + 2 + 1 + 13 + 624 + 25 = 666.

It is not a de Polignac number, because 1211362425 - 2⁴ = 1211362409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211362429) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 29545405 + ... + 29545445.

It is an arithmetic number, because the mean of its divisors is an integer number (10060120).

Almost surely, 2^1211362425 is an apocalyptic number.

1211362425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1211362425 is an abundant number, since it is smaller than the sum of its proper divisors (1685952135).

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

1211362425 is a wasteful number, since it uses less digits than its factorization.

1211362425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 106 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1211362425 is about 34804.6322348046. The cubic root of 1211362425 is about 1066.0020325164.

Adding to 1211362425 its reverse (5242631121), we get a palindrome (6453993546).

The spelling of 1211362425 in words is "one billion, two hundred eleven million, three hundred sixty-two thousand, four hundred twenty-five".