25211305051 has 16 divisors (see below), whose sum is σ = 26248264704. Its totient is φ = 24195314304.

The previous prime is 25211305043. The next prime is 25211305057. The reversal of 25211305051 is 15050311252.

It is a cyclic number.

It is not a de Polignac number, because 25211305051 - 2³ = 25211305043 is a prime.

It is a super-2 number, since 2×25211305051² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25211305057) 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, 797421 + ... + 828433.

It is an arithmetic number, because the mean of its divisors is an integer number (1640516544).

Almost surely, 2^25211305051 is an apocalyptic number.

25211305051 is a deficient number, since it is larger than the sum of its proper divisors (1036959653).

25211305051 is a wasteful number, since it uses less digits than its factorization.

25211305051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31350.

The product of its (nonzero) digits is 1500, while the sum is 25.

The spelling of 25211305051 in words is "twenty-five billion, two hundred eleven million, three hundred five thousand, fifty-one".