55135156425 has 24 divisors (see below), whose sum is σ = 91163540160. Its totient is φ = 29403240000.

The previous prime is 55135156393. The next prime is 55135156471. The reversal of 55135156425 is 52465153155.

It is a happy number.

It is not a de Polignac number, because 55135156425 - 2⁵ = 55135156393 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, 1854175 + ... + 1883675.

It is an arithmetic number, because the mean of its divisors is an integer number (3798480840).

Almost surely, 2^55135156425 is an apocalyptic number.

It is an amenable number.

55135156425 is a deficient number, since it is larger than the sum of its proper divisors (36028383735).

55135156425 is a wasteful number, since it uses less digits than its factorization.

55135156425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54433 (or 54428 counting only the distinct ones).

The product of its digits is 450000, while the sum is 42.

The spelling of 55135156425 in words is "fifty-five billion, one hundred thirty-five million, one hundred fifty-six thousand, four hundred twenty-five".