25387047 has 48 divisors (see below), whose sum is σ = 45235200. Its totient is φ = 14016240.

The previous prime is 25387013. The next prime is 25387049. The reversal of 25387047 is 74078352.

It is not a de Polignac number, because 25387047 - 2¹¹ = 25384999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25387049) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40704 + ... + 41322.

It is an arithmetic number, because the mean of its divisors is an integer number (942400).

Almost surely, 2^25387047 is an apocalyptic number.

25387047 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

25387047 is a deficient number, since it is larger than the sum of its proper divisors (19848153).

25387047 is a wasteful number, since it uses less digits than its factorization.

25387047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 25387047 is about 5038.5560431536. The cubic root of 25387047 is about 293.9030292439.

The spelling of 25387047 in words is "twenty-five million, three hundred eighty-seven thousand, forty-seven".