25315243274 has 8 divisors (see below), whose sum is σ = 37973920068. Its totient is φ = 12657269920.

The previous prime is 25315243271. The next prime is 25315243279. The reversal of 25315243274 is 47234251352.

It can be written as a sum of positive squares in 2 ways, for example, as 22367296249 + 2947947025 = 149557^2 + 54295^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (25315243271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74117 + ... + 236904.

Almost surely, 2^25315243274 is an apocalyptic number.

25315243274 is a deficient number, since it is larger than the sum of its proper divisors (12658676794).

25315243274 is a wasteful number, since it uses less digits than its factorization.

25315243274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351720.

The product of its digits is 201600, while the sum is 38.

The spelling of 25315243274 in words is "twenty-five billion, three hundred fifteen million, two hundred forty-three thousand, two hundred seventy-four".