25422476640 has 96 divisors (see below), whose sum is σ = 87360892416. Its totient is φ = 6163023360.

The previous prime is 25422476593. The next prime is 25422476647. The reversal of 25422476640 is 4667422452.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×25422476640² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25422476592 and 25422476601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25422476647) 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 15 ways as a sum of consecutive naturals, for example, 2402152 + ... + 2412711.

It is an arithmetic number, because the mean of its divisors is an integer number (910009296).

Almost surely, 2^25422476640 is an apocalyptic number.

25422476640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25422476640 is an abundant number, since it is smaller than the sum of its proper divisors (61938415776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25422476640 is a wasteful number, since it uses less digits than its factorization.

25422476640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4814892 (or 4814884 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 42.

The spelling of 25422476640 in words is "twenty-five billion, four hundred twenty-two million, four hundred seventy-six thousand, six hundred forty".