1565254480 has 40 divisors (see below), whose sum is σ = 3756616704. Its totient is φ = 605904000.

The previous prime is 1565254463. The next prime is 1565254507. The reversal of 1565254480 is 844525651.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

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, 313096 + ... + 318055.

Almost surely, 2^1565254480 is an apocalyptic number.

1565254480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1565254480 is an abundant number, since it is smaller than the sum of its proper divisors (2191362224).

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

1565254480 is a wasteful number, since it uses less digits than its factorization.

1565254480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631195 (or 631189 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 40.

The square root of 1565254480 is about 39563.2971325697. The cubic root of 1565254480 is about 1161.0786835025.

The spelling of 1565254480 in words is "one billion, five hundred sixty-five million, two hundred fifty-four thousand, four hundred eighty".