25552501 has 4 divisors (see below), whose sum is σ = 27518092. Its totient is φ = 23586912.

The previous prime is 25552493. The next prime is 25552561. The reversal of 25552501 is 10525552.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6838225 + 18714276 = 2615^2 + 4326^2 .

It is a cyclic number.

It is not a de Polignac number, because 25552501 - 2³ = 25552493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25552561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 982776 + ... + 982801.

It is an arithmetic number, because the mean of its divisors is an integer number (6879523).

Almost surely, 2^25552501 is an apocalyptic number.

It is an amenable number.

25552501 is a deficient number, since it is larger than the sum of its proper divisors (1965591).

25552501 is a wasteful number, since it uses less digits than its factorization.

25552501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965590.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 25552501 is about 5054.9481698629. The cubic root of 25552501 is about 294.5401280686.

The spelling of 25552501 in words is "twenty-five million, five hundred fifty-two thousand, five hundred one".