25487497 has 12 divisors (see below), whose sum is σ = 29754000. Its totient is φ = 21768936.

The previous prime is 25487479. The next prime is 25487521. The reversal of 25487497 is 79478452.

It is not a de Polignac number, because 25487497 - 2¹⁹ = 24963209 is a prime.

It is a super-2 number, since 2×25487497² = 1299225006650018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25487477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16254 + ... + 17752.

It is an arithmetic number, because the mean of its divisors is an integer number (2479500).

Almost surely, 2^25487497 is an apocalyptic number.

It is an amenable number.

25487497 is a deficient number, since it is larger than the sum of its proper divisors (4266503).

25487497 is a wasteful number, since it uses less digits than its factorization.

25487497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860 (or 1853 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The square root of 25487497 is about 5048.5143359210. The cubic root of 25487497 is about 294.2901519491.

The spelling of 25487497 in words is "twenty-five million, four hundred eighty-seven thousand, four hundred ninety-seven".