155265405 has 16 divisors (see below), whose sum is σ = 249607104. Its totient is φ = 82414080.

The previous prime is 155265367. The next prime is 155265443. The reversal of 155265405 is 504562551.

155265405 is nontrivially palindromic in base 14.

It is an interprime number because it is at equal distance from previous prime (155265367) and next prime (155265443).

It is not a de Polignac number, because 155265405 - 2¹¹ = 155263357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21364 + ... + 27693.

It is an arithmetic number, because the mean of its divisors is an integer number (15600444).

Almost surely, 2^155265405 is an apocalyptic number.

155265405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155265405 is a deficient number, since it is larger than the sum of its proper divisors (94341699).

155265405 is a wasteful number, since it uses less digits than its factorization.

155265405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49276.

The product of its (nonzero) digits is 30000, while the sum is 33.

The square root of 155265405 is about 12460.5539603984. The cubic root of 155265405 is about 537.4749568285.

The spelling of 155265405 in words is "one hundred fifty-five million, two hundred sixty-five thousand, four hundred five".