1225150040 has 32 divisors (see below), whose sum is σ = 2764428480. Its totient is φ = 488666112.

The previous prime is 1225150027. The next prime is 1225150049. The reversal of 1225150040 is 400515221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1225149994 and 1225150021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225150049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29264 + ... + 57503.

It is an arithmetic number, because the mean of its divisors is an integer number (86388390).

Almost surely, 2^1225150040 is an apocalyptic number.

1225150040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225150040 is an abundant number, since it is smaller than the sum of its proper divisors (1539278440).

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

1225150040 is a wasteful number, since it uses less digits than its factorization.

1225150040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87131 (or 87127 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1225150040 is about 35002.1433629428. The cubic root of 1225150040 is about 1070.0311633862.

Adding to 1225150040 its reverse (400515221), we get a palindrome (1625665261).

The spelling of 1225150040 in words is "one billion, two hundred twenty-five million, one hundred fifty thousand, forty".