25254151542 has 64 divisors (see below), whose sum is σ = 59703609600. Its totient is φ = 7885261440.

The previous prime is 25254151541. The next prime is 25254151583. The reversal of 25254151542 is 24515145252.

25254151542 is a `hidden beast` number, since 2 + 5 + 25 + 41 + 51 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 25254151497 and 25254151506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25254151541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128509 + ... + 258887.

It is an arithmetic number, because the mean of its divisors is an integer number (932868900).

Almost surely, 2^25254151542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25254151542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29851804800).

25254151542 is an abundant number, since it is smaller than the sum of its proper divisors (34449458058).

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

25254151542 is a wasteful number, since it uses less digits than its factorization.

25254151542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130618 (or 130612 counting only the distinct ones).

The product of its digits is 80000, while the sum is 36.

Adding to 25254151542 its reverse (24515145252), we get a palindrome (49769296794).

The spelling of 25254151542 in words is "twenty-five billion, two hundred fifty-four million, one hundred fifty-one thousand, five hundred forty-two".