25421954 has 8 divisors (see below), whose sum is σ = 38526348. Its totient is φ = 12579840.

The previous prime is 25421947. The next prime is 25421983. The reversal of 25421954 is 45912452.

It can be written as a sum of positive squares in 2 ways, for example, as 22306729 + 3115225 = 4723^2 + 1765^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25421954.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65327 + ... + 65714.

Almost surely, 2^25421954 is an apocalyptic number.

25421954 is a deficient number, since it is larger than the sum of its proper divisors (13104394).

25421954 is a wasteful number, since it uses less digits than its factorization.

25421954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131140.

The product of its digits is 14400, while the sum is 32.

The square root of 25421954 is about 5042.0188416943. The cubic root of 25421954 is about 294.0376723750.

The spelling of 25421954 in words is "twenty-five million, four hundred twenty-one thousand, nine hundred fifty-four".