25717020 has 48 divisors (see below), whose sum is σ = 82295808. Its totient is φ = 5878080.

The previous prime is 25717007. The next prime is 25717033. The reversal of 25717020 is 2071752.

It is an interprime number because it is at equal distance from previous prime (25717007) and next prime (25717033).

It is a super-2 number, since 2×25717020² = 1322730235360800, 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 15 ways as a sum of consecutive naturals, for example, 30196 + ... + 31035.

It is an arithmetic number, because the mean of its divisors is an integer number (1714496).

Almost surely, 2^25717020 is an apocalyptic number.

25717020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25717020 is an abundant number, since it is smaller than the sum of its proper divisors (56578788).

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

25717020 is a wasteful number, since it uses less digits than its factorization.

25717020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61250 (or 61248 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 25717020 is about 5071.1951254118. The cubic root of 25717020 is about 295.1709054690.

Adding to 25717020 its reverse (2071752), we get a palindrome (27788772).

It can be divided in two parts, 2571 and 7020, that added together give a triangular number (9591 = T₁₃₈).

The spelling of 25717020 in words is "twenty-five million, seven hundred seventeen thousand, twenty".