25430457 has 8 divisors (see below), whose sum is σ = 36515584. Its totient is φ = 15649488.

The previous prime is 25430443. The next prime is 25430459. The reversal of 25430457 is 75403452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25430457 - 2¹⁶ = 25364921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25430459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325993 + ... + 326070.

It is an arithmetic number, because the mean of its divisors is an integer number (4564448).

Almost surely, 2^25430457 is an apocalyptic number.

It is an amenable number.

25430457 is a deficient number, since it is larger than the sum of its proper divisors (11085127).

25430457 is a wasteful number, since it uses less digits than its factorization.

25430457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652079.

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 25430457 is about 5042.8619850240. The cubic root of 25430457 is about 294.0704514397.

The spelling of 25430457 in words is "twenty-five million, four hundred thirty thousand, four hundred fifty-seven".