25987445 has 16 divisors (see below), whose sum is σ = 34456320. Its totient is φ = 18657600.

The previous prime is 25987439. The next prime is 25987457. The reversal of 25987445 is 54478952.

It is a happy number.

It is not a de Polignac number, because 25987445 - 2¹⁴ = 25971061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25987396 and 25987405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1355 + ... + 7335.

It is an arithmetic number, because the mean of its divisors is an integer number (2153520).

Almost surely, 2^25987445 is an apocalyptic number.

It is an amenable number.

25987445 is a deficient number, since it is larger than the sum of its proper divisors (8468875).

25987445 is a wasteful number, since it uses less digits than its factorization.

25987445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076.

The product of its digits is 403200, while the sum is 44.

The square root of 25987445 is about 5097.7882458964. The cubic root of 25987445 is about 296.2019143708.

The spelling of 25987445 in words is "twenty-five million, nine hundred eighty-seven thousand, four hundred forty-five".