15255553425 has 72 divisors (see below), whose sum is σ = 29411305056. Its totient is φ = 6957135360.

The previous prime is 15255553399. The next prime is 15255553427. The reversal of 15255553425 is 52435555251.

It is not a de Polignac number, because 15255553425 - 2⁵ = 15255553393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15255553427) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1586482 + ... + 1596068.

It is an arithmetic number, because the mean of its divisors is an integer number (408490348).

Almost surely, 2^15255553425 is an apocalyptic number.

15255553425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15255553425 is a deficient number, since it is larger than the sum of its proper divisors (14155751631).

15255553425 is a wasteful number, since it uses less digits than its factorization.

15255553425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10047 (or 10035 counting only the distinct ones).

The product of its digits is 750000, while the sum is 42.

The spelling of 15255553425 in words is "fifteen billion, two hundred fifty-five million, five hundred fifty-three thousand, four hundred twenty-five".