25252533401 has 4 divisors (see below), whose sum is σ = 25254723252. Its totient is φ = 25250343552.

The previous prime is 25252533353. The next prime is 25252533403. The reversal of 25252533401 is 10433525252.

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 20627853376 + 4624680025 = 143624^2 + 68005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25252533401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25252533403) 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, 1077536 + ... + 1100721.

It is an arithmetic number, because the mean of its divisors is an integer number (6313680813).

Almost surely, 2^25252533401 is an apocalyptic number.

It is an amenable number.

25252533401 is a deficient number, since it is larger than the sum of its proper divisors (2189851).

25252533401 is a wasteful number, since it uses less digits than its factorization.

25252533401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189850.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 25252533401 in words is "twenty-five billion, two hundred fifty-two million, five hundred thirty-three thousand, four hundred one".