265151370 has 64 divisors (see below), whose sum is σ = 716636160. Its totient is φ = 62203200.

The previous prime is 265151309. The next prime is 265151371. The reversal of 265151370 is 73151562.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (265151371) 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 31 ways as a sum of consecutive naturals, for example, 2730 + ... + 23189.

It is an arithmetic number, because the mean of its divisors is an integer number (11197440).

Almost surely, 2^265151370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265151370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358318080).

265151370 is an abundant number, since it is smaller than the sum of its proper divisors (451484790).

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

265151370 is a wasteful number, since it uses less digits than its factorization.

265151370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25971.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 265151370 is about 16283.4692249533. The cubic root of 265151370 is about 642.4381041274.

The spelling of 265151370 in words is "two hundred sixty-five million, one hundred fifty-one thousand, three hundred seventy".