1553025740 has 24 divisors (see below), whose sum is σ = 3727262112. Its totient is φ = 532465920.

The previous prime is 1553025739. The next prime is 1553025811. The reversal of 1553025740 is 475203551.

It is a junction number, because it is equal to n+sod(n) for n = 1553025697 and 1553025706.

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, 5546381 + ... + 5546660.

It is an arithmetic number, because the mean of its divisors is an integer number (155302588).

Almost surely, 2^1553025740 is an apocalyptic number.

1553025740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1553025740 is an abundant number, since it is smaller than the sum of its proper divisors (2174236372).

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

1553025740 is a wasteful number, since it uses less digits than its factorization.

1553025740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11093057 (or 11093055 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 1553025740 is about 39408.4475715550. The cubic root of 1553025740 is about 1158.0470856036.

The spelling of 1553025740 in words is "one billion, five hundred fifty-three million, twenty-five thousand, seven hundred forty".