25342554251 has 16 divisors (see below), whose sum is σ = 29240915904. Its totient is φ = 21514581504.

The previous prime is 25342554233. The next prime is 25342554271. The reversal of 25342554251 is 15245524352.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25342554251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25342554271) 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, 307151 + ... + 380823.

It is an arithmetic number, because the mean of its divisors is an integer number (1827557244).

Almost surely, 2^25342554251 is an apocalyptic number.

25342554251 is a deficient number, since it is larger than the sum of its proper divisors (3898361653).

25342554251 is a wasteful number, since it uses less digits than its factorization.

25342554251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74150.

The product of its digits is 240000, while the sum is 38.

The spelling of 25342554251 in words is "twenty-five billion, three hundred forty-two million, five hundred fifty-four thousand, two hundred fifty-one".