155669957425 has 12 divisors (see below), whose sum is σ = 193534755840. Its totient is φ = 124210799120.

The previous prime is 155669957413. The next prime is 155669957453. The reversal of 155669957425 is 524759966551.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-155669957425 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8119405 + ... + 8138554.

It is an arithmetic number, because the mean of its divisors is an integer number (16127896320).

Almost surely, 2^155669957425 is an apocalyptic number.

It is an amenable number.

155669957425 is a deficient number, since it is larger than the sum of its proper divisors (37864798415).

155669957425 is a wasteful number, since it uses less digits than its factorization.

155669957425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16258352 (or 16258347 counting only the distinct ones).

The product of its digits is 102060000, while the sum is 64.

The spelling of 155669957425 in words is "one hundred fifty-five billion, six hundred sixty-nine million, nine hundred fifty-seven thousand, four hundred twenty-five".