25421755 has 8 divisors (see below), whose sum is σ = 30542400. Its totient is φ = 20313216.

The previous prime is 25421741. The next prime is 25421761. The reversal of 25421755 is 55712452.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25421755 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2526 + ... + 7564.

It is an arithmetic number, because the mean of its divisors is an integer number (3817800).

Almost surely, 2^25421755 is an apocalyptic number.

25421755 is a deficient number, since it is larger than the sum of its proper divisors (5120645).

25421755 is a wasteful number, since it uses less digits than its factorization.

25421755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6053.

The product of its digits is 14000, while the sum is 31.

The square root of 25421755 is about 5041.9991074969. Note that the first 3 decimals coincide. The cubic root of 25421755 is about 294.0369051424.

The spelling of 25421755 in words is "twenty-five million, four hundred twenty-one thousand, seven hundred fifty-five".