1554742425 has 24 divisors (see below), whose sum is σ = 2576116864. Its totient is φ = 827386560.

The previous prime is 1554742373. The next prime is 1554742457. The reversal of 1554742425 is 5242474551.

It is not a de Polignac number, because 1554742425 - 2⁷ = 1554742297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12339 + ... + 57111.

Almost surely, 2^1554742425 is an apocalyptic number.

1554742425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1554742425 is a deficient number, since it is larger than the sum of its proper divisors (1021374439).

1554742425 is a wasteful number, since it uses less digits than its factorization.

1554742425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45249 (or 45244 counting only the distinct ones).

The product of its digits is 224000, while the sum is 39.

The square root of 1554742425 is about 39430.2222286408. Note that the first 5 decimals coincide. The cubic root of 1554742425 is about 1158.4736228591.

The spelling of 1554742425 in words is "one billion, five hundred fifty-four million, seven hundred forty-two thousand, four hundred twenty-five".