25502505051 has 16 divisors (see below), whose sum is σ = 34473479040. Its totient is φ = 16767320640.

The previous prime is 25502505047. The next prime is 25502505101. The reversal of 25502505051 is 15050520552.

It is not a de Polignac number, because 25502505051 - 2² = 25502505047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25502505551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52495 + ... + 231863.

It is an arithmetic number, because the mean of its divisors is an integer number (2154592440).

Almost surely, 2^25502505051 is an apocalyptic number.

25502505051 is a deficient number, since it is larger than the sum of its proper divisors (8970973989).

25502505051 is a wasteful number, since it uses less digits than its factorization.

25502505051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180026.

The product of its (nonzero) digits is 12500, while the sum is 30.

The spelling of 25502505051 in words is "twenty-five billion, five hundred two million, five hundred five thousand, fifty-one".