25247152242 has 96 divisors (see below), whose sum is σ = 60635615040. Its totient is φ = 7541735040.

The previous prime is 25247152223. The next prime is 25247152261. The reversal of 25247152242 is 24225174252.

25247152242 is a `hidden beast` number, since 2 + 5 + 24 + 71 + 522 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (25247152223) and next prime (25247152261).

It is a junction number, because it is equal to n+sod(n) for n = 25247152197 and 25247152206.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4248109 + ... + 4254047.

It is an arithmetic number, because the mean of its divisors is an integer number (631620990).

Almost surely, 2^25247152242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25247152242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30317807520).

25247152242 is an abundant number, since it is smaller than the sum of its proper divisors (35388462798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25247152242 is a wasteful number, since it uses less digits than its factorization.

25247152242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6488 (or 6485 counting only the distinct ones).

The product of its digits is 89600, while the sum is 36.

The spelling of 25247152242 in words is "twenty-five billion, two hundred forty-seven million, one hundred fifty-two thousand, two hundred forty-two".