25541670 has 64 divisors (see below), whose sum is σ = 76432896. Its totient is φ = 5306880.

The previous prime is 25541669. The next prime is 25541671. The reversal of 25541670 is 7614552.

It is an interprime number because it is at equal distance from previous prime (25541669) and next prime (25541671).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25541671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3219 + ... + 7838.

It is an arithmetic number, because the mean of its divisors is an integer number (1194264).

Almost surely, 2^25541670 is an apocalyptic number.

25541670 is an abundant number, since it is smaller than the sum of its proper divisors (50891226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25541670 is a wasteful number, since it uses less digits than its factorization.

25541670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11085.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 25541670 is about 5053.8767297986. The cubic root of 25541670 is about 294.4985063767.

It can be divided in two parts, 2554 and 1670, that added together give a palindrome (4224).

The spelling of 25541670 in words is "twenty-five million, five hundred forty-one thousand, six hundred seventy".