155145233250 has 384 divisors, whose sum is σ = 506784245760. Its totient is φ = 35455644000.

The previous prime is 155145233237. The next prime is 155145233263. The reversal of 155145233250 is 52332541551.

155145233250 is a `hidden beast` number, since 1 + 5 + 51 + 4 + 523 + 32 + 50 = 666.

It is an interprime number because it is at equal distance from previous prime (155145233237) and next prime (155145233263).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 26787855 + ... + 26793645.

It is an arithmetic number, because the mean of its divisors is an integer number (1319750640).

Almost surely, 2^155145233250 is an apocalyptic number.

155145233250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155145233250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253392122880).

155145233250 is an abundant number, since it is smaller than the sum of its proper divisors (351639012510).

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

155145233250 is an frugal number, since it uses more digits than its factorization.

155145233250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5843 (or 5808 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 155145233250 in words is "one hundred fifty-five billion, one hundred forty-five million, two hundred thirty-three thousand, two hundred fifty".