1254523820 has 24 divisors (see below), whose sum is σ = 2874000528. Its totient is φ = 456190400.

The previous prime is 1254523819. The next prime is 1254523843. The reversal of 1254523820 is 283254521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2850971 + ... + 2851410.

It is an arithmetic number, because the mean of its divisors is an integer number (119750022).

Almost surely, 2^1254523820 is an apocalyptic number.

1254523820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1254523820 is an abundant number, since it is smaller than the sum of its proper divisors (1619476708).

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

1254523820 is a wasteful number, since it uses less digits than its factorization.

1254523820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5702401 (or 5702399 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 1254523820 is about 35419.2577561981. The cubic root of 1254523820 is about 1078.5152838005.

The spelling of 1254523820 in words is "one billion, two hundred fifty-four million, five hundred twenty-three thousand, eight hundred twenty".