25480997 has 4 divisors (see below), whose sum is σ = 25628460. Its totient is φ = 25333536.

The previous prime is 25480951. The next prime is 25481009. The reversal of 25480997 is 79908452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19483396 + 5997601 = 4414^2 + 2449^2 .

It is a cyclic number.

It is not a de Polignac number, because 25480997 - 2⁶ = 25480933 is a prime.

It is a super-2 number, since 2×25480997² = 1298562416228018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25480927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73472 + ... + 73817.

It is an arithmetic number, because the mean of its divisors is an integer number (6407115).

Almost surely, 2^25480997 is an apocalyptic number.

It is an amenable number.

25480997 is a deficient number, since it is larger than the sum of its proper divisors (147463).

25480997 is a wasteful number, since it uses less digits than its factorization.

25480997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147462.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 25480997 is about 5047.8705411292. The cubic root of 25480997 is about 294.2651325102.

The spelling of 25480997 in words is "twenty-five million, four hundred eighty thousand, nine hundred ninety-seven".