25376778020 has 24 divisors (see below), whose sum is σ = 58135891968. Its totient is φ = 9227919200.

The previous prime is 25376778017. The next prime is 25376778029. The reversal of 25376778020 is 2087767352.

It is not an unprimeable number, because it can be changed into a prime (25376778029) 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 7 ways as a sum of consecutive naturals, for example, 57674276 + ... + 57674715.

It is an arithmetic number, because the mean of its divisors is an integer number (2422328832).

Almost surely, 2^25376778020 is an apocalyptic number.

25376778020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25376778020 is an abundant number, since it is smaller than the sum of its proper divisors (32759113948).

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

25376778020 is a wasteful number, since it uses less digits than its factorization.

25376778020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115349011 (or 115349009 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 47.

The spelling of 25376778020 in words is "twenty-five billion, three hundred seventy-six million, seven hundred seventy-eight thousand, twenty".