155525023142 has 4 divisors (see below), whose sum is σ = 233287534716. Its totient is φ = 77762511570.

The previous prime is 155525023133. The next prime is 155525023163. The reversal of 155525023142 is 241320525551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38881255784 + ... + 38881255787.

It is an arithmetic number, because the mean of its divisors is an integer number (58321883679).

Almost surely, 2^155525023142 is an apocalyptic number.

155525023142 is a deficient number, since it is larger than the sum of its proper divisors (77762511574).

155525023142 is an equidigital number, since it uses as much as digits as its factorization.

155525023142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77762511573.

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 155525023142 its reverse (241320525551), we get a palindrome (396845548693).

The spelling of 155525023142 in words is "one hundred fifty-five billion, five hundred twenty-five million, twenty-three thousand, one hundred forty-two".