155725780740 has 48 divisors (see below), whose sum is σ = 440527379712. Its totient is φ = 41098761216.

The previous prime is 155725780739. The next prime is 155725780741. The reversal of 155725780740 is 47087527551.

It is an interprime number because it is at equal distance from previous prime (155725780739) and next prime (155725780741).

It is not an unprimeable number, because it can be changed into a prime (155725780741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13372684 + ... + 13384323.

It is an arithmetic number, because the mean of its divisors is an integer number (9177653744).

Almost surely, 2^155725780740 is an apocalyptic number.

155725780740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155725780740 is an abundant number, since it is smaller than the sum of its proper divisors (284801598972).

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

155725780740 is a wasteful number, since it uses less digits than its factorization.

155725780740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26757116 (or 26757114 counting only the distinct ones).

The product of its (nonzero) digits is 2744000, while the sum is 51.

The spelling of 155725780740 in words is "one hundred fifty-five billion, seven hundred twenty-five million, seven hundred eighty thousand, seven hundred forty".