19425745422690 has 32 divisors (see below), whose sum is σ = 46658819914560. Its totient is φ = 5176084234944.

The previous prime is 19425745422661. The next prime is 19425745422691. The reversal of 19425745422690 is 9622454752491.

It is a super-2 number, since 2×19425745422690² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19425745422691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257120629 + ... + 257196168.

It is an arithmetic number, because the mean of its divisors is an integer number (1458088122330).

Almost surely, 2^{19425745422690} is an apocalyptic number.

19425745422690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19425745422690 is an abundant number, since it is smaller than the sum of its proper divisors (27233074491870).

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

19425745422690 is a wasteful number, since it uses less digits than its factorization.

19425745422690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514318066.

The product of its (nonzero) digits is 43545600, while the sum is 60.

The spelling of 19425745422690 in words is "nineteen trillion, four hundred twenty-five billion, seven hundred forty-five million, four hundred twenty-two thousand, six hundred ninety".