25140151525 has 6 divisors (see below), whose sum is σ = 31173787922. Its totient is φ = 20112121200.

The previous prime is 25140151489. The next prime is 25140151529. The reversal of 25140151525 is 52515104152.

It can be written as a sum of positive squares in 3 ways, for example, as 3100373761 + 22039777764 = 55681^2 + 148458^2 .

It is not a de Polignac number, because 25140151525 - 2²³ = 25131762917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25140151529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 502803006 + ... + 502803055.

Almost surely, 2^25140151525 is an apocalyptic number.

25140151525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25140151525 is a deficient number, since it is larger than the sum of its proper divisors (6033636397).

25140151525 is a wasteful number, since it uses less digits than its factorization.

25140151525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005606071 (or 1005606066 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 31.

Adding to 25140151525 its reverse (52515104152), we get a palindrome (77655255677).

The spelling of 25140151525 in words is "twenty-five billion, one hundred forty million, one hundred fifty-one thousand, five hundred twenty-five".