20135825740 has 48 divisors (see below), whose sum is σ = 42486312960. Its totient is φ = 8016096960.

The previous prime is 20135825701. The next prime is 20135825753. The reversal of 20135825740 is 4752853102.

It is a self number, because there is not a number n which added to its sum of digits gives 20135825740.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8448589 + ... + 8450971.

It is an arithmetic number, because the mean of its divisors is an integer number (885131520).

Almost surely, 2^20135825740 is an apocalyptic number.

20135825740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20135825740 is an abundant number, since it is smaller than the sum of its proper divisors (22350487220).

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

20135825740 is a wasteful number, since it uses less digits than its factorization.

20135825740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222 (or 4220 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 20135825740 in words is "twenty billion, one hundred thirty-five million, eight hundred twenty-five thousand, seven hundred forty".