25541330451 has 32 divisors (see below), whose sum is σ = 44379514368. Its totient is φ = 12679856640.

The previous prime is 25541330411. The next prime is 25541330489. The reversal of 25541330451 is 15403314552.

It is not a de Polignac number, because 25541330451 - 2⁶ = 25541330387 is a prime.

It is a super-2 number, since 2×25541330451² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25541330401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2747065 + ... + 2756346.

It is an arithmetic number, because the mean of its divisors is an integer number (1386859824).

Almost surely, 2^25541330451 is an apocalyptic number.

25541330451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25541330451 is a deficient number, since it is larger than the sum of its proper divisors (18838183917).

25541330451 is a wasteful number, since it uses less digits than its factorization.

25541330451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5503451.

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 25541330451 in words is "twenty-five billion, five hundred forty-one million, three hundred thirty thousand, four hundred fifty-one".