25421470 has 8 divisors (see below), whose sum is σ = 45758664. Its totient is φ = 10168584.

The previous prime is 25421453. The next prime is 25421483. The reversal of 25421470 is 7412452.

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

It is a super-2 number, since 2×25421470² = 1292502273921800, which contains 22 as substring.

It is a congruent number.

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, 1271064 + ... + 1271083.

It is an arithmetic number, because the mean of its divisors is an integer number (5719833).

Almost surely, 2^25421470 is an apocalyptic number.

25421470 is a deficient number, since it is larger than the sum of its proper divisors (20337194).

25421470 is a wasteful number, since it uses less digits than its factorization.

25421470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542154.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 25421470 is about 5041.9708448185. The cubic root of 25421470 is about 294.0358063351.

The spelling of 25421470 in words is "twenty-five million, four hundred twenty-one thousand, four hundred seventy".