25154225401 has 4 divisors (see below), whose sum is σ = 25293199204. Its totient is φ = 25015251600.

The previous prime is 25154225399. The next prime is 25154225479. The reversal of 25154225401 is 10452245152.

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 10633734400 + 14520491001 = 103120^2 + 120501^2 .

It is a cyclic number.

It is not a de Polignac number, because 25154225401 - 2¹ = 25154225399 is a prime.

It is a super-2 number, since 2×25154225401² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25154225101) 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, 69486630 + ... + 69486991.

It is an arithmetic number, because the mean of its divisors is an integer number (6323299801).

Almost surely, 2^25154225401 is an apocalyptic number.

It is an amenable number.

25154225401 is a deficient number, since it is larger than the sum of its proper divisors (138973803).

25154225401 is a wasteful number, since it uses less digits than its factorization.

25154225401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138973802.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 25154225401 in words is "twenty-five billion, one hundred fifty-four million, two hundred twenty-five thousand, four hundred one".