25140019650 has 48 divisors (see below), whose sum is σ = 62899036704. Its totient is φ = 6644673280.

The previous prime is 25140019637. The next prime is 25140019669. The reversal of 25140019650 is 5691004152.

It is a super-2 number, since 2×25140019650² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 724644 + ... + 758543.

It is an arithmetic number, because the mean of its divisors is an integer number (1310396598).

Almost surely, 2^25140019650 is an apocalyptic number.

25140019650 is an abundant number, since it is smaller than the sum of its proper divisors (37759017054).

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

25140019650 is a wasteful number, since it uses less digits than its factorization.

25140019650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483315 (or 1483310 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The spelling of 25140019650 in words is "twenty-five billion, one hundred forty million, nineteen thousand, six hundred fifty".