25380605 has 16 divisors (see below), whose sum is σ = 31138560. Its totient is φ = 19854912.

The previous prime is 25380601. The next prime is 25380613. The reversal of 25380605 is 50608352.

It is a cyclic number.

It is not a de Polignac number, because 25380605 - 2² = 25380601 is a prime.

It is a super-2 number, since 2×25380605² = 1288350220332050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25380601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79907 + ... + 80223.

It is an arithmetic number, because the mean of its divisors is an integer number (1946160).

Almost surely, 2^25380605 is an apocalyptic number.

It is an amenable number.

25380605 is a deficient number, since it is larger than the sum of its proper divisors (5757955).

25380605 is a wasteful number, since it uses less digits than its factorization.

25380605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 25380605 is about 5037.9167321424. The cubic root of 25380605 is about 293.8781677009.

Adding to 25380605 its reverse (50608352), we get a palindrome (75988957).

The spelling of 25380605 in words is "twenty-five million, three hundred eighty thousand, six hundred five".