25385501 has 8 divisors (see below), whose sum is σ = 26879520. Its totient is φ = 23907312.

The previous prime is 25385489. The next prime is 25385509. The reversal of 25385501 is 10558352.

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-25385501 is a prime.

It is a super-2 number, since 2×25385501² = 1288847322042002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25385509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575 + ... + 7148.

It is an arithmetic number, because the mean of its divisors is an integer number (3359940).

Almost surely, 2^25385501 is an apocalyptic number.

It is an amenable number.

25385501 is a deficient number, since it is larger than the sum of its proper divisors (1494019).

25385501 is a wasteful number, since it uses less digits than its factorization.

25385501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7915.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 25385501 is about 5038.4026238482. The cubic root of 25385501 is about 293.8970631659.

It can be divided in two parts, 253 and 85501, that multiplied together give a triangular number (21631753 = T₆₅₇₇).

The spelling of 25385501 in words is "twenty-five million, three hundred eighty-five thousand, five hundred one".