13625242155 has 24 divisors (see below), whose sum is σ = 26990956512. Its totient is φ = 6228681984.

The previous prime is 13625242129. The next prime is 13625242177. The reversal of 13625242155 is 55124252631.

13625242155 is a `hidden beast` number, since 1 + 3 + 62 + 524 + 21 + 55 = 666.

It is not a de Polignac number, because 13625242155 - 2⁸ = 13625241899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21627054 + ... + 21627683.

It is an arithmetic number, because the mean of its divisors is an integer number (1124623188).

Almost surely, 2^13625242155 is an apocalyptic number.

13625242155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13625242155 is a deficient number, since it is larger than the sum of its proper divisors (13365714357).

13625242155 is a wasteful number, since it uses less digits than its factorization.

13625242155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43254755 (or 43254752 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

Adding to 13625242155 its reverse (55124252631), we get a palindrome (68749494786).

The spelling of 13625242155 in words is "thirteen billion, six hundred twenty-five million, two hundred forty-two thousand, one hundred fifty-five".