25401266254 has 32 divisors (see below), whose sum is σ = 47421581760. Its totient is φ = 9935937792.

The previous prime is 25401266251. The next prime is 25401266279. The reversal of 25401266254 is 45266210452.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25401266251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 767889 + ... + 800284.

It is an arithmetic number, because the mean of its divisors is an integer number (1481924430).

Almost surely, 2^25401266254 is an apocalyptic number.

25401266254 is a deficient number, since it is larger than the sum of its proper divisors (22020315506).

25401266254 is a wasteful number, since it uses less digits than its factorization.

25401266254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568284.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 25401266254 in words is "twenty-five billion, four hundred one million, two hundred sixty-six thousand, two hundred fifty-four".