1025145420 has 96 divisors (see below), whose sum is σ = 3225664512. Its totient is φ = 241367808.

The previous prime is 1025145377. The next prime is 1025145439. The reversal of 1025145420 is 245415201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10632 + ... + 46511.

It is an arithmetic number, because the mean of its divisors is an integer number (33600672).

Almost surely, 2^1025145420 is an apocalyptic number.

1025145420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025145420 is an abundant number, since it is smaller than the sum of its proper divisors (2200519092).

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

1025145420 is a wasteful number, since it uses less digits than its factorization.

1025145420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57191 (or 57189 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1025145420 is about 32017.8921854641. The cubic root of 1025145420 is about 1008.3125172641.

The spelling of 1025145420 in words is "one billion, twenty-five million, one hundred forty-five thousand, four hundred twenty".